I am running one 280x (Sapphire VaporX - 11221-02-40G) and using -
-I 13 -g 2 -w 384 --thread-concurrency 8191 --lookup-gap 2 --gpu-engine 1085 --gpu-memclock 1500 --temp-target 73 --auto-fan --gpu-fan 20-74 --temp-overheat 87 --temp-cutoff 95 --no-submit-stale
I was averaging 750kh/s no problem.
Last night I decided to bump the GPU clock and memory up to - 1150/1800. Checked temps and they where stable at 71/72 before leaving it and going to bed.
Last night we had a powercut for a few mins, and now using the above settings I am only averaging 570kh!! Reverting back to the above batch file of 1085/1500 I only average 470kh!!
Anyone care to take an educated guess as to whats happened?
Thanks